Application of Non-Orthogonal Multiplexing to mmWave Multi-User Systems

Vaia Kalokidou, Wenfang Yuan, Angela Doufexi, Simon Armour, Mark Beach

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

9 Citations (Scopus)


Limited wireless spectrum in future networks is an issue that millimeter-Wave (mmWave) frequencies can resolve. Beamforming is a challenging operation for mmWave systems. Both analogue and hybrid solutions have been proposed. Apart from Orthogonal Multiple Access (OMA) systems, the NonOrthogonal Multiple Access (NOMA) scheme has been recently considered as an alternative and can outperform OMA in many cases. Our contribution is the application of NOMA to a hybrid precoder design in mmWave indoor scenarios with multiple users. Introducing to our system appropriate user grouping and scheduling schemes, we show that the NOMA outperforms, in terms of spectral efficiency, OMA by providing a 17.1% improvement for high SNR values. Finally, applying NOMA with fair power allocation improves the rate of users with weak channel conditions by around 1 bps/Hz for 푆푁푅 > 5푑퐵, without degrading the overall spectral efficiency in the cell.
Original languageEnglish
Title of host publication2017 IEEE 85th Vehicular Technology Conference (VTC Spring)
Subtitle of host publicationProceedings of a meeting held 4-7 June 2017, Sydney, Australia.
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages6
ISBN (Electronic)9781509059324
ISBN (Print)9781509059331
Publication statusPublished - Feb 2018
Event85th IEEE Vehicular Technology Conference, VTC Spring 2017 - Sydney, Australia
Duration: 4 Jun 20177 Jun 2017

Publication series

NameVTS : Vehicular Technology Conference : VTC : [proceedings]
ISSN (Print)1550-2252


Conference85th IEEE Vehicular Technology Conference, VTC Spring 2017


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